Combined type-writing and computing machine.



G. 0. DEGENER.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLIOATION FILED FEB. 1, 1911.

Patented Mar. 12, L912.

3 8HEETSSKBET 1.

G. O. DEGENER.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED THE. 1, 1911. 1 20,082.

G. 0. DEGENER.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED FBB.1,1911.

Patented Mar. 12, 1912.

3 SHEETSSHEET 3.

Wiinessea- UNITED STATES PATENT oEFIoE.

GUSTAVE O. DEGENER, OF NEW YORK, N. Y., ASSIGNOR TO UNDERWOOD COMPUTING MAC'I-IINE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

COMBINED TYPE-WRITING AND COMPUTING MACHINE.

To all whom it may concern:

Be it known that I, GUSTAVE O. DEGENER, a citizen of the United States, residing in New York city, in the count-y of New York and State of New York, have invented certain new and useful Improvements in Combined Type-WVriting and Computing Machines, of which the following is a specification.

This invention relates to computing machines, and particularly to combined computing and typewriting machines of the kind set forth in application No. 485,030, filed March 22, 1909, by Walter Wright. In said application, the master wheel of the computing mechanism was operated by a power-driven escapement wheel; the power being derived from a constantly rotating motor, and a slip clutch being provided between said motor and said escapement wheel, so that the latter, although normally stationary, was under constant tendency to rotate, such rotation being controlled by escapement dogs under the control of the numeral keys of the typewriter.

One of the objects of the present invention is to avoid the necessity of the use of a constantly slipping clutch between the constantly revolving motor and the normally stationary wheel which drives the usual master wheel; and to this end I cause said drive Wheel to become automatically disconnected from the rotating motor at the completion of each computation. For effecting such disconnection, I provide said drive-wheel with a gear capable of being variably mutilated by said numeral keys; and I provide a motor-driven pinion to mesh with said gear. Whenever any key is depressed, the gear is restored to connection with the pinion, and the latter turns the gear until the point is reached where the gear has been mutilated; at which point the gear and pinion run out of mesh, and the pinion revolves idly, the gear being arrested by a stop. Said pinion is preferably connected to the constantly rotating motor by means of the toothed clutch, which is under the control of the numeral keys. lVhenever any key is depressed, the last set stop is returned to original position, so as to liberate the drive-wheel or gear; the mutilated gear is restored so as to connect it with the driving pinion; said gear is muti- Specification of Letters Patent.

Application filed February 1, 1911.

Patented Mar. 12, 1912.

Serial No. 605,863.

lated at another point so as to determine the extent to which the pinion shall turn the gear, another stop is projected to arrest the gear, and the clutch is closed between said pinion and the constantly rotating motor, the clutch remaining closed long enough to enable said motor to turn the drive wheel the required distance, whereupon the latter is arrested by the last-projected stop, and the pinion is automatically disconnected from the gear; the clutch being also automatically opened.

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a side elevation of an Underwood typewriting and computing machine, embodying the present improvements. Fig. 2 is a sectional elevation of the computing carriage which is connected to the paper carriage of the typewriting machine. Fig. 3 is a rear perspective view of the principal members of the mechanism which controls the movement of the computing wheels. Fig. 4c is a rear perspective View of the escapement wheel provided for the typewriter carriage, and is to be read in connection with Fig. 3. Fig. 5 is a sectional rear elevation showing the key cont-rolled clutch mechanism seen at Fig. 8, with the clutch open. Fig. 6 is a view similar to Fig. 5, but showing the clutch closed. Fig. 7 is a view similar to a part of Fig. 1, but showing, on a larger scale, a gear capable of being mutilated, and certain other gears and levers. Fig. Sis a part sectional rear view, and Fig. 9 is a plan showing the parts seen at Fig. 7. Fig. 10 is a perspective view of the main gear and the pinion whereby itis revolved. Fig. 11 is a sectional view of the key-controlled clutch.

Letter-type keys 1 and numeral-type keys 2 are mounted on levers 3, which, by means of sub-levers 4C, are connected to type bars 5, to swing them upwardly and rearwardly against a platen 6. This platen is mounted on a carriage 7, propelled by a spring barrel 8, and having a rack 9 meshing with a pinion 10, to which is connected an escapement wheel 11. This wheel is controlled through the usual alphabetical and other type keys, including the keys 1, 2, to cause the carriage to feed at every type stroke. For this purpose, dogs 12, 13 engage the wheel 11, and

these dogs are rocked or controlled by means of,a universal bar frame 14, which is pressed rearwardly by heels 15 on the type bars.

The numeral keys are connected by links 16 to a set of bell cranks 17, and the latter, through links 18 rock levers 19, to which are pivoted jacks 20 grouped in a circle. Any jack may push out any of a circular series of pins 21, which are carried by a drive wheel 22 connected to the computing Wheels and capable of turning any thereof. The pins are detained in either normal or projected positions by a coil-spring band 21 engaging seats or grooves 21 in the pins. Each of said levers 19 bears upon a universal plate or bar 23 fixed upon a sliding rod 24, said rod carrying a head 25, and one end of a lever 26 being confined between the head 25 andthe plate 23, so as to be rocked thereby. This lever is suitably fulcrumed at 27, and at its outer end is connected by a link 28 to an arm 29 fixed upon a horizontal rock shaft 30. This shaft is intended to operate a clutch mechanism whereby a constantly rotating driver is caused intermittently, at the numeral key strokes, to turn the main computation Wheel or driver 22.

The power is furnished by a constantly revolving electrical or other motor 31, which may be connected by a centrifugal friction clutch 32 such as shown in pending applications of 'Walter Wright, to a shaft 33 concentric with the motor shaft; a bevel pinion 34 on shaft 33 meshing with a bevel pinion 35 on shaft 36, and the latter carrying at its front end a bevel pinion 37 meshing with a bevel pinion 38, loose on a horizontal shaft 39; said pinion 38 constantly rotating. The clutch 32 may be omitted in some cases, and the pinion 34 may be fixed directly on the shaft of the motor. The clutch is useful in preventing injury to the mechanism should an accident occur, also in minimizing shocks to the gearing. The clutch 32 may comprise segmental weights carried on the free ends of arms 32, the latter fixed at their bases on the motor shaft, and said segmentsrubbing upon the inner side of a ring 32", fixed to shaft 33 carrying pinion 34. It will be understood that under ordinary circumstances there is no slip of this clutch during the operation of the ma chine. Upon said pinion 38 is fixed one member 40 of a positive toothed clutch, whose function it is to connect said pinion 38 to the shaft 39, the latter carrying a pinion 41 to mesh with the series of pins 21 on the main computation wheel or driver 22, whereby said pinion 41 can turn said wheel 22 and hence the computing wheels which are connected thereto. During the ,downstroke of the key 2, said clutch remains open; but upon the up-stroke of the key, the clutch is closed, and shaft 39 is caused to rotate together with pinion 41, and the wheel 22 is turned to an extent dependent upon the position thereon of the last-displaced pin 21, that is, upon the point at which the wheel was mutilated by a key.

During the down stroke of the key 2, an arm 42 fixed upon the rock shaft 30 moves to the left at Fig. 3, and draws back a trip 43, which is pivoted at 44 to said arm 42, and rests upon a lug 45, fixed upon a clutchcontrolling arm or actuator 46, which is pivoted at 47 upon a fixture and is provided with a spring 48, which tends always to move said arm to open the clutch, that is to withdraw clutch member 49 from member 40. The member 49 is in the form of a sleeve which is splined to the shaft 39, as seen at 50, and has a groove 51 to receive the head of arm 46. During the down stroke of the key, therefore, the shoulder 52 of the trip is slipped off from the lug 45, and falls down in front of the same, as seen at Fig. 5, ready to engage saidlug and swing the clutch arm 46 upon the return strokes of the parts. Preferably, a detent 53 falls into a notch 54 on plate 54 fixed to the arm 29, at or near the completion of the down stroke of the key 2, so as to prevent said rock shaft from returning prematurely under the influence of its returning spring 55. Said detent 53 is normally idle, riding upon the edge of the plate 54, but at or a little before the completion of the down stroke of the key, is caused by a spring 56 to snap into the notch 54, and a rod 57 connected to detent 53 swings a lever 58, to cause the latter to thrust a rod 59 and a pallet 60 thereon into engagement with the tooth of the typewriter-carriage escapement-wheel 11.

At the initial portion of the return stroke of the key 2, (before the latch 53 arrests the returning member 54*) the cscapement wheel 11 is let off, and the pallet 60 is thrust out, thereby returning to normal positions the members 59, 58, 57 and 53, and hence releasing the rock shaft 30, which is immediately returned to normal position by its spring 55. Upon this movement of the rock shaft, the arm 42 swings to the right from the position at Fig. 5 to that at Fig. 6, and causes the shoulder 52 of the trip to engage the lug 45 and swing the arm 46 to the right, to cause the clutch member 49 to engage the clutch member 40, the latter being in constant revolution, and hence causing the clutch member 49 and the shaft 39 to turn together with the pinion 41, whose function is to turn the main computation wheel 22 by means of the row of projecting pins 21 thereon.

At the completion of the described return movement of the rock shaft 30, a nose 61 of the trip engages a fixed cam or de fiector 62, which lifts the trip until the shoulder 52 escapes from the lug 45, thus permitting spring 48 to return the arm 46 to the normal Fig. 5 position against a stop 46 thus opening the clutch; the duration of the closed condition of the clutch being, however, sufiicient to enable the wheel 22 to be turned the required distance.

The wheel 22 is arrested by the engagement of the end 21 of the last projected pin 21 with a counter-stop 63, fixed upon the framework; and a friction spring or brake 64 prevents rebound of the wheel 22. It is obvious that the distance through which the wheel 22 rotates is equal to the distance between the last projected pin and said counter-stop 63; and hence the jacks 20 are placed in such positions, that the depression of any numeral key 2 will cause the projection of a pin 21 at such distance from the stop 63 as to cause the subsequent rotation of wheel 22 to be equal to the number of steps indicated by the depressed key; so that the computing wheels, presently to be described, will be rotated a corresponding distance.

The pinion 41 is so placed, that when the last displaced pin 21, 21 engages the counter-stop 63, as seen at Figs. 3 and 10, said pinion can rotate idly in the space leftvacant by the displacement of said pin, until its motion dies out, or until the last-displaced pin 21, 21 is returned to normal position.

In order to enable the wheel 22 to be turned again, as will be understood, the displaced pin must be returned to normal position; and for this purpose, an arm 66 is caused to strike that pin and return it to normal position during the down-stroke of the key 2; said arm being pivoted at 67 upon a fixed support, and having a forked member 68 to engage an arm or lug 69 fixed on the rock shaft 30. This arm 69 moves upward at the down-stroke of the key, thereby swinging the arm 66 to the right from the position at Figs. 3 and 8, thereby pushing back the projected pin 21, 21 to clear the stop 63, and also to enter the space between adjacent teeth of the pinion 41.

In case the returning pin 21 collides with a tooth of the pinion 41, the latter will yield, the shaft 39 for this purpcse being movable longitudinally; and a spur or tooth 70 projecting from a part of the framework, will be engaged by a tooth of the pinion ll, and turn the latter to such a position that the pin 21 may thrust between the teeth thereof. Preferably each pinion tooth is beveled on one side at 71 to be engaged by the tooth 70, and on the other side at 72 to be engaged and cammed around by the returning pin 21, in some cases. The tooth 7 0 will be engaged only when the pinion is in such position that the returning pin 21 engages a pinion tooth and thrusts the pinion back. The shaft 39 and pinion are returned end wise to normal positions by a spring 73 coiled around the shaft.

A system of computing wheels 86 is connected to the pin wheel 22 by a train of gearing, which includes a pinion 74 on the shaft of said wheel 22, a pinion 7 5 meshing with said pinion, a bevel pinion 76 rigid with 7 5, a bevel pinion 77 meshing with 7 6 and fixed on a horizontal shaft 78, a bevel pinion 79 on the other end of 78, a bevel pinion 80 on a vertical shaft 81 and meshing with 7 9, a bevel pinion 82 'on the upper end of 81, and a bevel pinion 83 meshing with 82 and secured upon a square shaft 8t, upon which there is fixed a master wheel 85 to en gage internal teeth formed upon the gang of computing wheels 86; the latter being in the form of spur gears to engage gears 87 formed on numberbearing wheels 88. The invention is applicable also to machines having other forms of master elements or members.

The tens-carrying mechanism includes a special tooth 89 provided on each computing wheel 86 to engage and rotate a five-pointed pinion 90, rigid with which is a pinion 91 meshing with the computing wheel 86 of next higher denomination. Fixed to both 90 and 91, is a five-lobed wheel 92, held in normal position by a yielding detent 93, and adapted to be turned into engagement with an assisting or boosting device in the form of a constantly rotating soft-rubber or other roll 9%, which turns the lobed wheel together with the two pinions fixed thereto, and the computing wheel 86 of next higher denomination, until detent 93 falls into the next notch in the five-lobed wheel. Said assisting roll 9 may be rotated by a shaft 95, having a bevel pinion 96, meshing with a bevel pinion 97 on an upright shaft 98, the latter having a bevel pinion 99 meshing with a bevel pinion 100 upon an inclined shaft 101, carrying at its lower end bevel pinion 102 meshing with a pinion 103 on the constantly revolving shaft 36.

The computing wheels are mounted upon a carriage 10st sliding on rails 105 and connected by an arm 106 to the typewriter carriage 7 the shaft 95 being splined to roll 94, to permit the endwise travel of the latter with the carriage 10%.

In explanation of certain of the claims, it will be seen that a normally stationary driver 22 is connected to a master wheel 85; that the source of power 31 is normally incapable of exerting a driving force upon the driver 22; that the keys cause said driver to be turned by the motor 31 only until the driver is rotated to an extent which depends upon the key operated; that means are provided for effecting automatic disconnection of the driver 22 from the train of mechanism 41, 39, 38, 37, 36, 35, 34C, 31 such automatic disconnection being effected by the displacement of one of the pins 21; that the closing and Opening of the clutch 40, 19 is under the control of the keys, and occurs only upon their return strokes; that the disconnection of the driver 22 and the master wheel 85 from said train of mechanism (beginning with the pinion 4:1) is dependent upon the movement of said members 22 and 85, and independent of the clutch 40, 49; that the member 22 may be regarded as a computation gear capable of being mutilated, and that the keys operate to variably mutilate said gear for the purpose of disconnecting it from the pinion 41; that when mutilating the gear at any point, the key concomitantly restores the gear where it was previously mutilated, so as to reconnect it with said pinion; that a normally ineffective stop 21 formed upon the end of a pin 21 is protruded by the key concomitantly with such restoration of the mutilated gear; that any key, when protruding one stop, returns the last projected stop, that is, the one that is in engagement with the counter-stop 63; and that through the latch 53, the carriage 7 on the typewriter (connected to the computing carriage 104), is enabled to control the connection of the constantly rotating motor 31 with the pinion 41, so that the computation Wheels may not rotate while the carriage is traveling; it being understood that the carriage is fed upon the return strokes of the keys, the member 5 1* being intended, on each down stroke of the key, to swing the notch 55% considerably past the latch 53, so that at the first part of the upstroke of the key, the carriage feeding dogs 12, 13 are caused to release the carriage 7 before the member 29 is arrested by the latch 53.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, 1 claim:

1. In a computing machine, the combina tion of a set of numeral keys, a gang of computing wheels, a master wheel or member, a normally stationary driver for said master wheel, a source of power normally incapable of exerting a driving force upon said stationary driver, and means under the control of said keys for causing said driver to be driven by said source of power only until it is turned to an extent which depends upon the key operated.

2. In a computing machine, the combination of a set of numeral keys, a gang of computing wheels, a master member, a normally stationary driver for said master member, a source of power, and means under the control of said keys for causing said driver to be connected to said source of power and disconnected therefrom, and for limiting the extent to which the driver is operated by said source of power.

3. In a computing machine, the combina tion of a set of numeral keys, a gang of computing wheels, a master member, a normally stationary driver for said master member, a source of power, and a train of devices extending from said source of power to said driver, and including means under the control of said keys for operating said driver by means of said source of power; means being provided for enabling the keys to limit the stroke of the driver and for eflecting automatic disconnection of said driver from said train.

4. In a computing machine, the combina tion with a set of keys, of a gang of comput ing wheels, a master wheel or member, a driver for said master wheel, a power-driven member, means, including a key-controlled clutch, for connecting said driver to said power-driven member, and means dependent on the keys for controlling the extent to which the driver is turned by means of said power-driven member.

5. In a computing machine, the combination with a set of keys, of a gang of computing wheels, a master wheel or member, a driver for said master wheel, a power-driven member, means, including a key-controlled clutch, for connecting said driver to said power-driven member, and means dependent on the keys for controlling the extent to which the driver is turned by means of said power driven member; provision being made for automatic disconnection of the driver from said power-driven member at the completion of the stroke of the driver.

, 6. In a computing machine, the combination of a set of numeral keys, a gang of computing wheels, a master wheel or member, a normally stationary driver for said master wheel, a power-driven member, and means to enable any of said keys to control the connection of said driver to said power-driven member and its disconnection therefrom and to limit the movement of said driver while connected to said power-driven member.

7. In a computing machine, the combination of a set of numeral keys, a gang of computing wheels, a master wheel or member, a power-rotated member, a clutch between said power-rotated member and said master wheel and under the control of said keys, and means also under the control of said keys for limiting the movement of the master wheel; provision being made for automatically disconnecting the master wheel from said power-rotated member.

8. In a computing machine, the combination of a set of numeral keys, a gang ofcomputing wheels, a master wheel or member, a driver for said master wheel, a power rotated member, a clutch between said power rotated member and said master wheel and under the control of said keys, and means also under the control of said keys for limiting the movement of said driver and effecting disconnection between said driver and said power rotated member at "the completion of the movement of the former.

9. In a computing machine, the combination of a set of numeral keys, a gang of com puting wheels, a master wheel or member, a power rotated member, a clutch between said power rotated member and said master wheel and under the control of said keys, means under the control of said keys for limiting the movement of the master wheel, and means dependent upon the movement of the master wheel and independent of said clutch for disconnecting the master wheel automatically from said power rotated memher at the completion of a movement of the former.

10. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, and means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated.

11. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to cause disconnection of the pinion from the same at a point predetermined by the key operated, and means for enabling any of said keys to concomitantly restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion.

12. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated, a series of normally ineffective stops settable by said keys concomitantly with the mutilation of said gear, and a counter-stop.

13. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated, means for enabling any of said keys to concomit-antly restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion, a series of normally ineffective stops settable by said keys concomitantly with the mutilation of said gear, and a counter-stop.

14. In a computing machine, the combination with a computation wheel having teeth or projections thereon, of a pinion for rotating said wheel by means of said teeth or projections, said teeth or projections displaceable independently of one another out of position formeshing with said pinion, whereby said pinion may turn said wheel until reaching a break caused by the displacement of one of said projections.

15. In a computing machine, the combination with a computation wheel having teeth or projections thereon, of a pinion for rotating said wheel by means of said teeth or projections, said teeth or projections displaceable independently of one another out of position for meshing with said pinion, whereby said pinion may turn said wheel until reaching a break caused by the displacement of one of said projections, normally ineiiective stops settable concomitantly with the displacement of said teeth or projections, and a counter-stop.

16. In a computing machine, the combination of a set of numeral keys, a gang of computing wheels, a master wheel or member, a normally stationary driver for said master wheel, a source of power normally incapable of exerting a driving force upon said stationary driver, means under the control of said keys for causing said driver to be driven by said source of power until it is turned to an extent which depends upon the key operated, and a variable stop device controlled by said keys for arresting said driver.

17. In a computing machine, the combination of a set of numeral keys, a gang of computing wheels, a master wheel or member, a normally stationary driver for said master wheel, a source of power, means under the control of said keys for causing said driver to be connected to said source of power and disconnected therefrom, and for limiting the extent to which the driver is operable by said source of power, a set of stops for said wheel, said stops controllable by said keys, and a counter-stop.

18. In a computing machine, the combination of a set of numeral keys, a gang of computing wheels, a master wheel or memher, a normally stationary driver, a source of power, a train of devices extending from said source of power to said driver, and including means under the control of said keys for operating said driver by means of said source of power; means being provided for efiecting automatic disconnectlon of said driver from said train; a set of stops for said master wheel, said stops controlled by said keys, and a counter-stop.

19. In a computing machine, the combination of a set of numeral keys, a-normally stationary computation wheel, a powerdriven member normally disconnected from said wheel, means to enable any of said keys to control the connection of said wheel to said power-driven member and its disconnection therefrom, and stops controllable by said keys for arresting said computation wheel.

20. In a computing machine, the combination of a set of numeral keys, a normally stationary computation wheel, a powerdriven member normally disconnected from said wheel, means to enable any of said keys to control the connection of said wheel to said power-driven member and its disconnection therefrom, stops controllable by said keys for arresting said computation. wheel, and means for enabling any of said keys to release said wheel from the control of said stops.

21. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated, and stops for arresting said gear.

22. In a computing machine, the combination with a computation gear capable of being mutilated, of a power-driven pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated, means for enabling any of said keys to concomitantly restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion, and a stop mechanism also controlled by said keys, for arresting and releasing said gear.

23. In a computingmachine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, means for variably mutilating said gear, thereby to disconnect the pinion from the same at variable pointsin the rotation of the gear, a series of normally ineflective stops settable concomitantly with the mutilation of said gear, a counterstop, and means for restoring the gear at the previously mutilated portion thereof and concomitantly releasing the gear from the last set stop.

24:. In a computing machine, the combination with a computation gear capable of be ing mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated, means for enabling any of said keys to concomitantly restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion, a series of normally inetl'ective stops settable by said keys concomitantly with the mutilation of said gear, a counter-stop, and means for enabling any key to return the last set stop.

25. In a computing machine, the combination with a computation wheel having teeth or project-ions thereon, of a pinion for rotating said wheel by means of said teeth or projections, said teeth or projections displaceable independently of one another out of position for meshing with said pinion, whereby said pinion may turn said wheel untilreaching a break caused by the displacement of one of said projections, keys to displace said projections, stops settable by said keys, and a counter-stop, every key having means to restore the previously displaced projection and return the last set stop.

26. In a computing machine, the combination with a computation wheel having teeth or projections thereon,- of a pinion for rotating said wheel by means of said teeth or projections, said teeth or projections displaceable independently 01 one another out of position for meshing with said pinion, whereby said pinion may turn said wheel until reaching a break caused by the displacement of one of said projections, normally ineifective stops settable concomitantly with the displacement of said teeth or projections, a counter-stop, and means to restore said projections and said stops to normal positions.

27. In a computing machine, the combination of a computation wheel having a circle of pins or projections whereby it may be driven, each of said pins being displaceable independently of the others, a power driven pinion to mesh with said pins to drive said computation wheel, and selective means for displacing said pins, whereby to disconnect said wheel from said pinion at the required point.

28. In a computing machine, the combination of a computation wheel having a circle of pins or projections whereby it may be driven, each of said pins being displaceable independently of the others, a power driven pinioii'to mesh with said pins to drive said computation wheel, selective means for displacing said pins, whereby to disconnect said wheel from said pinion at the required point, said selective means including a set of keys, and means operable by any of said keys to restore the last displaced pin when displacing any of the remaining pins.

29. In a computing machine, the combination of a computation wheel having a circle of pins or projections whereby it may be driven, each of said pins being displaceable independently of the others, a power driven pinion to mesh with said pins to drive said computation wheel, selective means for dis placing said pins, whereby to disconnect said wheel from said pinion at the required point, said selective means including a series of jacks, and a series of keys connected to said jacks to operate them.

30. In a computing machine, the combination of a computation wheel having a circle of pins or projections whereby it may be driven, each of said pins being displaceable independently of the others, a power driven pinion to mesh with said pins to drive said computation wheel, selective means for displacing said pins, whereby to disconnect said wheel from said pinion at the required point, said selective means including a set of keys, means operable by any of said keys to restore the last displaced pin when displacing any of the remaining pins, and said restoring means including a plate or member common to said keys, and a part operable by said plate or member to engage the displaced pin and restore the same.

31. In a computing machine, the combination of a computation wheel having a cir cle of pins or projections whereby it may be driven, each of said pins being displaceable independently of the others, a power driven pinion to mesh with said pins to drive said computation wheel, selective means for dis-placing said pins, whereby to disconnect said wheel from said pinion at the required point, said selective means including a set of keys, means operable by any of said keys to restore the last displaced pin when displacing any of the remaining pins, stops being connected to said pins, so that when any pin is displaced, a corresponding stop is projected, and a counterstop; each stop being returnable to normal position by said keys together with its associated pin.

32. In a computing machine, the combination of a computation wheel having a circle of pins or projections whereby it may be driven, each of said pins being displaceable independently of the others, a power driven pinion to mesh with said pins to drive said computation wheel, selective means for displacing said pins, whereby to disconnect said wheel from said pinion at the required point, said selective means including a set of keys, means operable by any of said keys to restore the last displaced pin when displacing any of the remaining pins, stops being connected to said pins, so that when any pin is displaced, a corresponding stop is projected, and a counter-stop; each stop being returnable to normal position by said keys together with its associated pin; said pins being mounted for sliding movements in said wheel, and said stops being formed or provided upon the ends of said pins, to be projected from the opposite side of said wheel whenever any of said pins is displaced by a jack.

33. Ina computing machine, the combination of a computation wheel having a circle of pins or projections whereby it may be driven, each of said pins being displaceable independently of the others, a power driven pinion to mesh with said pins to drive said computation wheel, selective means for displacing said pins whereby to disconnect said wheel from said pinion at the required point, said selective means including a set of keys, means operable by any of said keys to restore the last displaced pin 7 when displacing any of the remaining pins,

stops being connected to said pins, so that when any pin is displaced, a corresponding stop is projected, a counter-stop; each stop being returnable to normal position by said keys together with its associated pin, and means for preventing rebound of said computation wheel.

34. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at apoint determined by the key operated, stops for arresting said gear, and means for preventing rebound of said computation wheel.

35. In a computing machine, the combination with a computation wheel having a circle of projecting pins, of a power-driven pinion to mesh with said pins to drive said wheel, selective means to displace any of said pins to cause disconnection of said wheel from said pin, each pin having a stop.

portion which is projected when the pin is displaced, and a counter-stop placed in position to arrest said wheel by engagement with the projected stop thereon when said wheel reaches a position in which the pinion revolves idly in the open space left by the displaced pin.

36. In a computing machine, the combination with a computation wheel having a circle of projecting pins, of a power-driven pinion to mesh with said pins to drive said wheel, selective means to displace any of said pins to cause disconnection of said wheel from said pin, each pin having a stop portion which is projected when the pin is displaced, a counter-stop placed in position to arrest said wheel by engagement with the projected stop thereon when said wheel reaches a position in which the pinion revolves idly in the open space left by the displaced pin, and means for returning said stop and pin to normal positions concomitantly with the selective displacement of another pin and stop.

37. In a computing machine, the combination with a computation wheel having a circle of projecting pins, of a power-driven pinion to mesh with said pins to drive said wheel, selective means to displace any of said pins to cause disconnection of said wheel from said pin, and means for returning said stop to normal position concomitantly with the selective displacement of another pin; said pinion being mounted to yield when engaged by the returning pin.

38. In a computing machine, the combination with a computation wheel having a circle of projecting pins, of a powerdriven pinion to mesh with said pins to drive said wheel, selective means to displace any of said pins to cause disconnection of said wheel from said pin, and means for returning said stop to normal position concomitantly with the selective displacement of another pin; said pinion being mounted to yield when engaged by the returning pin, and having teeth with beveled edges to enable the returning pin to eliect a partial rotation of said pinion.

39. In a computing machine, the combination with a computation wheel having a circle of projecting pins, of a 3ower-driven pinion to mesh with said pins to drive said wheel, selective means to displace any of said pins to cause disconnection of said wheel from said pin, means for returning said stop to normal position concomitantly with the selective displacement of another pin; said pinion being mounted to yield when engaged by the returning pin, and having teeth with beveled edges to enable the returning pin to effect a partial rotation of said pinion, and means dependent upon the yielding movement of said pinion for deflecting or rotating the same to cause the returning pin to escape from the tooth of the pinion.

4C0. In a computing machine, the combination with a computation wheel having a circle of projecting pins, of a power-driven pinion to mesh with said pins to drive said wheel, selective means to displace any of said pins to cause disconnection of said wheel from said pin, means for returning said stop to normal position concomitantly with the selective displacement of another pin; said pinion being mounted to yield when engaged by the returning pin, and having teeth with beveled edges to enable the returning pin to effect a partial rotation of said pinion, and means dependent upon the yielding movement of said pinion for deflecting or rotating the same to cause the returning pin to escape from the tooth of the pinion; said rotating means in the form of a fixed deflector to engage the tooth of the pinion.

41. In a computing machine, the combination with a computation wheel having a circle of projecting pins, of a power-driven pinion to mesh with saidpins to drive said wheel, selective means todisplace any of said pins to cause disconnection of said wheel from said pin, means for returning said stop to normal position concomitantly with the selective displacement of another pin; said pinion being mounted to yield when engaged by the returning pin, and having teeth with beveled edges to enable the returning pin to efi'ect a partial rotation of said pinion, and means dependent upon the yielding movement of said pinion for deflecting or rotating the same to cause the returning pin to escape from the tooth of the pinion; said rotating means in the form of a fixed deflector to engage the tooth of the pinion; and the engaging faces being beveled to facilitate the rotation of the pinion by means of said deflector.

42. -In a computing machine, the combination with a computation wheel having a circle of projecting pins, of a power-driven pinion to mesh with said pins to drive said wheel, selective means to displace any of said pins to cause disconnection of said wheel from said pin, means for returning said stop to normal position concomitantly with the selective displacement of another pin; said pinion being mounted to yield when engaged by the returning pin, and a spring to restore said pinion to normal position.

43. In a computing machine, the combination with a computation wheel, of a pinion normally disengaged from said wheel, a stop preventing the advance of said wheel, means for releaslng said wheel from said stop and simultaneously engaging said pinion wit-h said wheel, and means for concomitantly mutilating said wheel to effect its subsequent disconnection from said pinion, and for projecting a stop for arresting the wheel when it becomes so disconnected.

4a. In a computing machine, the combina tion with a computation wheel, of a pinion normally disengaged from said wheel, a stop preventing the advance of said wheel, means for releasing said wheel from said stop and simultaneously engaging said pinion with said wheel, means for concomitantly mutilating said wheel to effect its subsequent disconnection from said pinion, and for pro jecting a stop for arresting the wheel when it becomes so disengaged, and means for checking the wheel against rebound when it is arrested by said stop.

45. In a computing machine, the combination of a set of numeral keys, a computation wheel, a power-rotated member, a train of devices extending from said wheel to said power-rotated member and including a clutch controlled by said keys for connecting said computation wheel to said constantly rotating member, and selective means controlled by said keys for causing saidc omputation wheel to be driven by said clutch through a part of a revolution, the extent of which is determined by the key operated, and for automatically arresting said computation wheel and causing its disconnection from said train.

46. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with lot said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated, a power-rotated member, and a clutch between said power-rotated member and said pinion, said clutch controlled by said keys.

4?. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, for disconnecting the pinion from the salne at a point predetermined by the key operated, a power-rotated member, a clutch between said power-rotated member and said pinion, and means for enabling any of said keys to restore the gear at the point where it was previously mutilated, thereby to reconnect said gear to said pinion, and concomitantly close said clutch to cause said gear to be rotated by said source of power,

48. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilatae said gear, fordisconnecting the pinion from the same at a point predetermined by the key operated, a power-rotated member, a clutch between said power-rotated member and said pinion, means for enabling any of said keys to restore the gear at the point where it was pre vicusly mutilated, thereby to reconnect said gear to said pinion, and concomitantly close said clutch to cause said gear to be rotated by said source of power, and means for arresting said gear, including a stop protrusible by said keys and connected to said gear to be returned to normal position concomitantly with the restoration of said gear.

49. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined. by the key operated, a series of normally ineffective stops settable by said keys concomitantly with the mutilation of said gear, a counter-stop, a powerrotated member, a clutch between said power-rotated member and said pinion, and means for enabling said keys to control said clutch.

50. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated, means for enabling any of said keys to concomitantly restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion, a series of normally ineffective stops settable by said keys concomitantly with the mutilation of said gear, a counter-stop, a power-rotated member, a clutch between said power-rotated member and said pinion, and means for enabling said keys to close said clutch when restoring the gear where it was previously mutilated.

51. In a computing machine, the combination of a set of numeral keys, a gang of computing wheels, a master wheel or member, a normally stationary driver for said master wheel, a power-rotated member, means under the control of said keys and including a clutch for causing said driver to be driven by said power-rotated member until the driver is turned to an extent which depends upon the key operated, and a variable stop device controlled by said keys for arresting said driver.

52. In a computing machine, the combination of a set of numeral keys, a gang of computing wheels, a master wheel or member, a normally stationary driver, a power-rotated member, a train of devices extending from said power-rotated member to said driver, and including a clutch under the control of said keys; means being provided for effecting automatic disconnection of said driver from said train; a set of stops for said master wheel, said stops controlled by said keys, and a counter-stop.

53. In a computing machine, the combination of a set of numeral keys, a normally stationary computation wheel, a powerdriven member normally disconnected from said wheel, means including a clutch and also including an independently breakable connection, for enabling any of said keys to control the connection of said wheel to said power-driven member and its disconnection therefrom, and stops controllable by said keys for arresting said computation Wheel.

54. In a computing machine, the combination of a set of numeral keys, a normally stationary computation wheel, a power driven member, a train of devices including a clutch for connecting said power-driven member to said wheel, said train normally disconnected from said wheel, means to enable any of said keys to control the connection of said train to said wheel and its disconnection therefrom, and also to enable said keys to close or control said clutch, stops controllable by said keys for arresting said computation wheel, and means for enabling any of said keys to release said wheel from the control of said stops.

55. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a power-rotated member, a set of keys, means to enable the keys to clutch said pinion to said power-rotated member and simultaneously to variably mutilate said gear, thereby to cause the disconnection of the pinion from the same at a point predetermined by the key operated, and stops for arresting said gear.

56. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a power-rotated member, a clutch between said member and said pinion, a set of keys, means to enable the keys to clutch said pinion to said power-rotated member and concomitantly to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated, means for enabling any of said keys to concomitantly restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion, and a stop mechanism also controlled by said keys, for arresting and releasing said gear.

57. In a computing machine, the combination with a power-driven member, of a computation gear capable of being mutilated, a pinion to mesh with said gear, means for variably mutilating said gear, thereby to cause the disconnection of the pinion from the same at variable points in the rotation of the gear, a series of normally ineiiective stops settable concomitantly with the muti lation of said gear, a counter-stop, and means for restoring the gear at the previously mutilated portion thereof and concomitantly releasing the gear from the last set stop and clutching said pinion to said powendriven member.

58. In a computing machine, the combination with a power-driven member, of a computation gear capable of being mutilated, a pinion to mesh with said gear, a clutch between said pinion and said powerdriven member, a set of keys, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from the same at a point determined by the key operated, means for enabling any of said keys to concomitantly restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion, means for concomitantly closing said clutch, a series of normally ineffective stops settable by said keys concomitantly with the mutilation of said gear, a counter-stop, and means for enabling any key to return the last set stop.

59. In a computing machine, the eombina' tion of a power-rotated member, a computation wheel having a circle of pins or projections whereby it may be driven, each of said pins being displaceable independently of the others, a pinion to mesh with said pins to drive said computation wheel, a clutch between said pinion and said powerrotated member, selective means for displacing said pins, whereby to cause the disconnection of said wheel from said pinion at the required point, and means for restoring the previously displaced pin and closing said clutch.

. 60. In a computing machine, the combination with a power-driven member, of a com putation wheel, a pinion normally disengaged from said wheel, a clutch between said pinion and said power-driven member, a stop preventing the advance of said wheel, means for releasing said wheel from said step and simultaneously engaging said pinion with said wheel and closing said clutch, and, means for concomitantly mutilating said wheel to eifect its subsequent disconnection from said pinion, and for projecting a stop for arresting the wheel when it becomes so disengaged.

61. In a computing machine, the combination of a carriage, a computation gear capable of being mutilated, a pinion to mesh with said gear, a set of keys controlling said carriage, means to enable the keys to variably mutilate said gear, thereby to dis connect the pinion from the same at a point determined by the key operated, a powerrotated member, and a clutch between said power-rotated member and said pinion, said clutch controlled by said keys through said carriage.

62. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a set of keys, means to enable the keys to variably mutilate said gear, for disconnecting the pinion from the same at a point predetermined by the key operated, a power-rotated member, a clutch between said power-rotated member and said pinion, and means for enabling any of said keys to restore the gear at the point where it was previously mutilated, thereby to reconnect said gear to said pinion, and upon their return strokes to cause or control the closing of said clutch to cause said gear to be rotated by said source of power.

63. In a computing machine, the combination of a letter-feeding carriage, a computation gear capable of being mutilated, a pinion to mesh with said gear, a set of keys, carriage -feeding mechanism controlled thereby, means to enable the keys to variably mutilate said gear, for causing subse-, quent disconnection of the pinion from the gear at a point predetermined by the key operated, a power-rotated member, a clutch between said power-rotated member and said pinion, means for enabling any of said keys to rest-ore the gear at the point where it was previously mutilated, thereby to reconnect said gear to said pinion, means controlled by said carriage for closing said clutch to cause said gear to be rotated by said source of power, and means for arresting said gear, including a stop protrusible by said keys and connected to said gear to be returned to' normal position concomitantly with the restoration of said gear.

64. In a computing machine, the combination With a carriage, of a computation gear capable of being mutilated, a pinion to mesh with said gear, a setof keys, means to enable the keys upon their down strokes to variably mutilate said gear, thereby to cause the subsequent disconnection of the pinion from the same at a point predetermined by the key operated, means for enabling any of said ,keys upon the down stroke thereof to restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion, a series of normally ineffective stops settable by said keys at the down strokes thereof, a counter-stop, a power-rotated member, a clutch between said power-rotated member and said pinion, and means to close said clutch upon the return strokes of said keys.

65. In a computing machine, the combination of a carriage, a set of numeral keys, a normally stationary computation wheel, a power-driven member, a train of devices including a clutch for connecting said power-driven member to said wheel, said train normally disconnected from said wheel, means to enable any of said keys upon the down stroke thereof to cause the connection of said train to said wheel, and to mutilate said wheel to cause its subsequent disconnection from said train, and also to enable said keys upon the up stroke thereof to feed said carriage and close said clutch, stops settable by said keys upon the down strokes thereof for arresting said computation wheel, and means for enabling any of said keys upon the down stroke thereof to release said wheel from the control of the previously set stop.

66. In a computing machine, the combination with a computation gear capable of being mutilated, of a pinion to mesh with said gear, a power-rotated member, a clutch between said member and said pinion, a set of keys, a carriage, mechanism to feed the carriage upon the return stroke of each key, means to enable the keys upon the down stroke thereof to variably mutilate said gear, thereby to cause the subsequent disconnection of the pinion from the same at a point predetermined by the key operated, means for enabling any of said keys to concomitantly restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion, means effective upon the return strokes of the keys to clutch said Pinion to said powerrotated member, and a stop mechanism also controlled by said keys, for arresting and releasing said gear.

67. In a computing machine, the combination with a power-driven member, of a computation gear capable of being mutilated, a pinion to mesh with said gear, a clutch between said pinion and said power-driven member, a set of keys, a carriage controlled by said keys and forming part of the com puting mechanism, means to enable any of the keys upon its down stroke to variably mutilate said gear, thereby to disconnect the pinion from the same at a pointdetermined by the key operated, means for enabling any of said keys to concomitantly restore the gear at the point where it was previously mutilated, thereby to reconnect said gear with said pinion, means for closing said clutch upon the return stroke of the key, a series of normally ineffective stops settable by said keys concomitantly with the mutilation of said gear, a counter-stop, and means for enabling any key to return the last set stop.

68. In a computing machine, the combination of a master wheel element, an element consisting of a gang of computing wheels, a carriage to which one of said elements is connected for step-by-step movements relatively to the other of said elements, a drive 'gear connected to said master wheel and capable of being mutilated, a pinion to mesh with said gear, a set of keys controlling said carriage, means to enable the keys to variably mutilate said gear, thereby to cause subsequent disconnection of the pinion from the gear at a point predetermined by the key operated, a series of normally ineffective stops settable by said keys, a counter stop, a power rotated member, a clutch between said power-rotated member and said pinion, and means dependent upon the movement of said carriage for closing said clutch.

69. In a computing machine, the combination of a master element, an element consisting of a gang of computing wheels, a carriage to which one of said elements is connected for step -bystep movements relatively to the other of said elements, a drive gear connected to said master wheel and capable of being mutilated, a pinion to mesh with said gear, a set of keys controlling said carriage, devices operable by said keys for enabling them to variably mutilate said gear, thereby to cause subsequent disconnection of the pinion from the gear at a point predetermined by the key operated, a power-rotated member, a clutch between said power-rotated member and said pinion, a clutch closer, a returning spring therefor, a reciprocating actuator for said clutch closer, means to enable any of said keys to move said actuator in one direction, a latch for holding said actuator in abnormal position, means to enable the carriage to release said latch, and a spring to return said actuator.

70. In a computing machine, the combination of a master element, an element consisting of a gang of computing wheels, a carriage to which one of said elements is connected for step -bystep movements relatively to the other of said elements, a drive gear connected to said master wheel and capable of being mutilated, a pinion to mesh with said gear, a set of keys controlling said carriage, devices operable by said keys for enabling them to variably mutilate said gear, thereby to cause subsequent disconnection of the pinion from the gear at a point predetermined by the key operated, a powerrotated member, a clutch between said power-rotated member and said pinion, a clutch closer, a returning spring therefor, a reciprocating actuator for said clutch closer, means to enable any of said keys to move said actuator in one direction, a latch for holding said actuator in abnormal position, means to enable the carriage to release said latch, and a spring to return said actuator; a trip being provided between said ac tuator and said clutch closer to operate the latter at the return stroke of the actuator; means being provided to release said trip at the last portion of said return stroke.

71. In a computing machine, the combination of a master wheel or member, a gang of computing wheels, a drive gear connected to said master wheel and capable of being mutilated, a pinion to mesh with said gear, a set of keys, a set of devices connected to said keys for enabling them to variably mutilate said gear, thereby to cause subsequent disconnection of the pinion from the gear at a point predetermined by the key operated, a power -rotated member, a v clutch between said powe1'"-rotated member and said pinion, and means to enable said keys, upon the return stroke thereof, to effect the closing and opening of said clutch.

' 72. In a computing machine, the combination of a. master-wheel or member, a gang of computing wheels, a drive gear connected to said master wheel and capable of being mutilated, a pinion to mesh with said gear, a set of keys, a set of devices connected to said keys for enabling them to variably mutilate said gear, thereby to cause subsequent disconnection of the pinion from the gear at a point. predetermined by the key operated, a power rotated member, a clutch between said power-rotated member and said pinion, a trip caused by the return strokes of said keys to close and then release said clutch, and a spring for opening said clutch.

73. In a computing machine, the combination of a master wheel or member, a gang of computing wheels, a drive gear connected to said master wheel and capable of being mu tilated, a pinion to mesh with said gear, a

-set of keys, a set of devices connected to said keys for enabling them to variably mutilate said gear, thereby to cause subsequent dis-, connection of the pinion from the gearat a point predetermined by the key operated, a power-rotated member, a clutch between said power-rotated member and said pinion, a clutch closer, a key-controlled actuator for said clutch closer, a trip between said actuator and said clutch closer to operate the latter at the return strokes of the keys, means being provided to release said trip after the closing of said clutch, and means for returning said clutch closer to normal positions.

74. In a computing machine, the combination of a carriage, a computation gear capable of being mutilated, a pinion to mesh with said gear, a set of keys controlling said carriage, means to enable the keys to variably mutilate said gear, thereby to disconnect the pinion from 't'he same at a point determined by the key operated, a constantly revolving electric," motor, a member connected by a friction clutch to said motor to be rotated thereby, and a clutch between said power-rotated member and said pinion and controlled by said keys through said carriage.

7 5. In a computing machine, the combination of a constantly rotating motor, a set of computing keys, a drive gear capable of being variably mutilated by said keys, a pinion to mesh with said drive gear, a clutch between said pinion and said motor, said clutch controlled by said keys, stops for said drive gear, a counter-stop, means for enabling any key to release the drive gear from the last set stop and to reconnect the same to said pinion, means for enabling the keys to control said clutch, a gang of computing wheels, a master wheel connected to said gear, and a tens-carrying mechanism including a constantly rotating assisting de vice connected to said motor.

GUSTAVE o. niaeanna Witnesses J. E. Lucas, G. S. YOUNG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

